Extra pin usage - Githubissues

charlespax commented 8 years ago

We have two pins (PC1, PC4) available that are currently broken out to test pads. What can we do with them? Each is connected to a 12-bit ADC.

SD_DETECT
SD_ENABLE to cut power to SD and reset the card
Add a two pin header near the modules. A wire jumper could be used to rout them to a module.
May be needed for the ESP8266 board.
Connect to LEDs
Buzzer
Use a voltage divider to measure battery voltage with one of the free pins for the low voltage side. This would be to cut off current while not measuring.
VBUS_DETECT
May be needed as we improve the circuit

charlespax commented 7 years ago

PC4 is now used for VBUS_DETECT. PC1 is PC1_BOOT0, which I think can serve as double duty for something like SD_DETECT.

charlespax commented 7 years ago

Closing issue

PaxInstruments / labwiz-board